ANSI 117-2025: Standard Specification for Structural Glued Laminated Timber of Softwood Species

ANSI 117-2025, the Standard Specification for Structural Glued Laminated Timber of Softwood Species was developed to address characteristics of importance to the use of glulam and provides general information useful to the manufacturer and designer, reference design values for use in the design of glulam and specific layup requirements.

This publication is designed for: glulam manufacturers and designers, engineers

This Specification contains values for the design of structural glued laminated timber members.

Key sections include:

• Basic requirements

• Reference design values

• Layup requirements

• Alternate combinations

• Laminated lumber grading rules

• History of standard

This document is a revision of ANSI 117-2020.